Help! Any tips or ideas?

They're looking good so far. If you fixed the light issue and they're not stretching anymore, then you're golden.

 

They're going outside? Like in direct sunlight or in some kind of greenhouse? Then for sure they still have a few more weeks to go. When you finally decide it's time, make sure to make time to harden them off to the outside weather to avoid stress/issues. I would suggest already having your plants on an 18/6 light cycle by the time you plan on hardening them off.

"How could I sort this one out? Without the support its proper floppy"

Add extra soil to the top of the pot for extra support. What kind of soil is that, or is it coco? They look good, but when it's time to transplant into a bigger pot, I would suggest adding some perlite to your mix.

 

You can transplant them and add soil to about a 1/4 inch below the leaves. And move your lights closer to them


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Perlite isn't required, but it does help a lot in giving the roots oxygen as well as provide excellent drainage abilities. They should sell it at your nearest garden center or hydro shop. Just add a small amount of it to your soil mix.

Just add enough extra soil to give it support. Yea an inch or two is fine.

 

Here's a quote from a site that explains this:

"It's recommended to add perlite so it makes up around 10-50% of the total volume of potting mix.

Add 10-20% perlite if you want better water retention and don't plan on using a lot of extra nutrients. This is because a lot of extra perlite can cause the nutrients leach out faster from the soil as water drains through easily.

Add 30-50% perlite if you plan to use a lot of added nutrients or supplements and are looking to get the fastest growth from your plants."

 

I was going to say who's Andre lol. Anyway, 12" may be a bit too close for an LED. I'd rather put them at 18" to be on the safe side. Then again, I don't know how your plants are reacting to them. How long have you had them under the new light at 12"? You'll have to monitor their leaves throughout the day for several days to make sure the LED lights will not harm them. If you see that the leaves begin to bend at the leaf edges or cup or twist and turn away from the light, then you have the lights too close. Raise them a few inches. If you keep seeing the leaves reaching up for light and stretching, then they need more light.

 

That one plant looks like it's reaching up for more light. I don't know the wattage or brand of your LED's, but I only suggested the 18" because the majority of growers asking for advice on LED's on here use LED's that are pretty intense and usually always put them too close to their young plants. In this case, your LED's may not be that intense, which is why they look like they're reaching up for more light, I'm assuming. You can try lowering them an inch at a time until the leaves are nice and flat; not reaching for light nor twisting away or cupping.

Concerning the leaves, the very bottom leaves (the very first ones that come out of the seeds) are called the Cotyledons. Those don't count as true leaves. So far, from that pic, it shows the first set of true leaves and the 2nd set of true leaves just barely coming out.

 

Tie the long ones in a knot.